To change your iDrive split-screen mode to full-screen mode order the coding option now. View all the apps in full-screen mode and make your screen clutter free.
If you have NBT EVO unit please check requirements before you proceed.
GO TO NAVIGATION MENU – FIND SETTINGS – FIND POSITION AND VERSION HISTORY – CHECK VERSION

If you see NBTevo_P,Q,R or higher letter– you have to select CODING VIA CABLE option.
If you see N or O letter you can select CODING VIA USB option.
Any other letter is not compatible.